Invention Grant
- Patent Title: Phase change memory programming method without reset over-write
- Patent Title (中): 相位改变存储器编程方法,无复位重写
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Application No.: US12166934Application Date: 2008-07-02
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Publication No.: US07864566B2Publication Date: 2011-01-04
- Inventor: Matthew J. Breitwisch , Chung H. Lam
- Applicant: Matthew J. Breitwisch , Chung H. Lam
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agent Ido Tuchman; Vazken Alexanian
- Main IPC: G11C11/00
- IPC: G11C11/00 ; G11C7/00

Abstract:
A method for programming a phase change memory device that avoids RESET overwrite. The method partially comprised of applying a reset write current pulse through the phase change memory element such that the reset write current pulse produces a voltage drop across the phase change memory element less than a reset threshold voltage and greater than a set threshold voltage. The reset write current pulse writing a RESET state to the phase change memory cell. The method additionally comprised of applying a set write current pulse through the phase change memory element such that the set write current pulse produces a voltage drop across the phase change memory element that is equal to or greater than the reset threshold voltage. The set write current pulse writing a SET state to the phase change memory cell.
Public/Granted literature
- US20100002499A1 PHASE CHANGE MEMORY PROGRAMMING METHOD WITHOUT RESET OVER-WRITE Public/Granted day:2010-01-07
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